If we think about this algebraically, what we really want to do is express the input pixel as the weighted sum of palette colours. This is nothing more than a linear combination of palette colours with weights :
（二）原值超过500万元的单项长期资产，购进时先全额抵扣进项税额，此后在用于混合用途期间，根据调整年限计算五类不允许抵扣项目对应的不得从销项税额中抵扣的进项税额，逐年调整。，详情可参考safew官方版本下载
But engineers want water in their pipes, not fish.。关于这个话题，夫子提供了深入分析
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